# Pearl-2 AV inputs

For best performance, we recommend using a maximum of six 1920×1080@30 fps sources in up to six full HD channels simultaneously. Up to four of those 1080@30 inputs can be from NDI 6.2 sources. Or you can have up to four 4K sources simultaneously in a single channel. One of those 4K inputs can be from a networked source (SRT, RTSP, or NDI).

Only content that is not HDCP-protected is captured from HDMI and USB video sources.

Pearl-2 supports the following AV inputs. It also supports common signal converters and input adapters.

Pearl-2 Rackmount Twin has two complete sets of these inputs.

**Table 8 Inputs for Pearl-2**

| **Input port** | **Qty** | **Details** |
| --- | --- | --- |
| **SDI**1 | 2 | Linear PCM audio/video input. Supports up to 12G-SDI signals. |
| **HDMI™** | 2 | Linear PMC audio/video input, non-HDCP protected. DVI-I (using an adapter) is single link. |
| **4K HDMI**2 | 2 | Linear PMC audio/video input, non-HDCP protected. DVI-I (using an adapter) is single link. |
| **USB 3.0** | 2 | Linear PCM audio/video input accepts non-HDCP protected content. Use to connect UAC or UVC devices, such as USB microphones and web cameras. Can also connect to external hard drives, flash drives, and control interfaces. |
| **RJ-45**3 | 1 | Up to six SRT sources over Ethernet at 1920×1080@30 fps or one 4K SRT input. |
|  |  | Up to six RTSP sources over Ethernet at 1920×1080@30 fps or one 4K RTSP input. |
|  |  | Up to four NDI sources over Ethernet at 1920×1080@30 fps or one 4K NDI input. Up to six NDI|HX sources over Ethernet at 1920×1080@30 fps. |
| **RCA**4 | 2 | RCA consumer line-level audio inputs function as a stereo pair (-10 dBV). White = left Red = right |
| **XLR**4 | 4 | The XLR inputs accept balanced and unbalanced, pro line level signals (+4.0 dBu) up to 12.3 VRMS, +24 dBu. By default, the four XLR ports operate as two stereo left/right audio pairs (XLR A pair and XLR B pair). You can configure the ports to operate as independent mono inputs using the Admin panel |

1 SD-SDI audio is not supported
2 Requires 4K feature add on
3 A mix of video over Ethernet sources are supported. Just ensure that total system loading is within acceptable levels
4 In the Admin panel, Analog audio B includes audio signals from the XLR B audio pair and the RCA audio pair by default. You can disable one or the other using the Admin panel

If you are using DVI2PCIe cards with your Pearl-2, DVI2PCIe cards do not support audio over HDMI.

> product: pearl-2 · topic: specs-ports · source: pearl-2-userguide.md · updated: Oct 13, 2026